technical (from 9) = Proper or good condition for work, market, etc. Also attributive.

colloquial. With the. In predicative use: the relevant or correct thing; that which is proper, requisite, befitting, or fashionable (in later use…

Originally U.S. Good physical condition; the state of good health or physical fitness. In in (also into, out of) shape. Cf. sense 13.

The quality or state of being fit or suitable; the quality of being fitted, qualified, or competent. spec. the quality or state of being physically…

The action or an instance of shaping up.